The team focuses on experimental and theoretical researches to develop the scientific and technical abilities for the realization of quantum networks, with applications to the distribution and processing of quantum information. These works include the development of light-matter interfaces for quantum data storage, the generation, characterization and manipulation of various non-classical states of light, and the implementation of networking protocols using these resources.This research involves fundamental and more applied studies in quantum optics, light-matter interaction, non-linear optics, photon detection and nanophotonics.

We are part of PCQC, the Paris Center for Quantum Computing, of the DIM Sirteq on Quantum Technologies and Partner of the Quantum Internet Alliance QIA.

Interested in quantum optics and quantum information science? We are always happy to welcome motivated undergraduates, PhD students and Postdocs. Two postdoc positions are now open !

NEWS

The team has recently succeeded in creating a wired atomic entangled state that can be stored and later read out as a guided single photon. At the core of the device is an atomic register composed of a chain of individual cesium atoms tightly trapped along a nanofiber. Using a heralded method, we generated a collective entangled state with one ‘spin-flip’ excitation shared among the whole atomic chain. To retrieve the stored information, an external read pulse is sent to the atomic ensemble and results in the emission of a single photon into the fiber. This scheme offers a fiber-addressable single collective excitation in an atomic register with on-demand readout.

This work is now published in Nature “Waveguide-coupled single collective excitation of atomic arrays”. See the story in Phys.org. It follows previous works done in the group in this context, including the demonstration of stopped light in a nanofiber (published in PRL, Selected by Optics and Photonics News in Optics in 2015) or the realization of a Bragg mirror (PRL).

October 26 , 2018 – Our PRL on hybrid steering is now online ! A great collaboration!

August 20 , 2018 – Our Optica on remote state preparation is published. Congrats to the Hybrid Photonics Team !June 14, 2018 – A News and Views written by Julien about two papers "Entanglement on demand" ! Congrats to Ronald's and Andreas' team !

Feb. 13, 2018 – Our PRL on slowing decoherence by squeezing in online. Congrats to the team and thank you Radim for the collaboration.